Revert of removing equality / compute invariant loops from GrGeometryProcessors

src/gpu/effects/GrBitmapTextGeoProc.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrBitmapTextGeoProc.h"
 #include "GrFontAtlasSizes.h"
 #include "GrInvariantOutput.h"
@@ skipping 100 matching lines @@
     GrColor fColor;
     UniformHandle fColorUniform;
 
     typedef GrGLGeometryProcessor INHERITED;
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
 GrBitmapTextGeoProc::GrBitmapTextGeoProc(GrColor color, GrTexture* texture,
                                          const GrTextureParams& params, GrMaskFormat format,
-                                         const SkMatrix& localMatrix)
-    : INHERITED(color, SkMatrix::I(), localMatrix)
+                                         bool opaqueVertexColors, const SkMatrix& localMatrix)
+    : INHERITED(color, SkMatrix::I(), localMatrix, opaqueVertexColors)
     , fTextureAccess(texture, params)
     , fInColor(NULL)
     , fMaskFormat(format) {
     this->initClassID<GrBitmapTextGeoProc>();
     fInPosition = &this->addVertexAttrib(Attribute("inPosition", kVec2f_GrVertexAttribType));
 
     bool hasVertexColor = kA8_GrMaskFormat == fMaskFormat;
     if (hasVertexColor) {
         fInColor = &this->addVertexAttrib(Attribute("inColor", kVec4ub_GrVertexAttribType));
+        this->setHasVertexColor();
     }
     fInTextureCoords = &this->addVertexAttrib(Attribute("inTextureCoords",
                                                         kVec2s_GrVertexAttribType));
     this->addTextureAccess(&fTextureAccess);
 }
 
+bool GrBitmapTextGeoProc::onIsEqual(const GrGeometryProcessor& other) const {
+    const GrBitmapTextGeoProc& gp = other.cast<GrBitmapTextGeoProc>();
+    return SkToBool(this->inColor()) == SkToBool(gp.inColor());
+}
+
+void GrBitmapTextGeoProc::onGetInvariantOutputColor(GrInitInvariantOutput* out) const {
+    if (kARGB_GrMaskFormat == fMaskFormat) {
+        out->setUnknownFourComponents();
+    }
+}
+
+void GrBitmapTextGeoProc::onGetInvariantOutputCoverage(GrInitInvariantOutput* out) const {
+    if (kARGB_GrMaskFormat != fMaskFormat) {
+        if (GrPixelConfigIsAlphaOnly(this->texture(0)->config())) {
+            out->setUnknownSingleComponent();
+        } else if (GrPixelConfigIsOpaque(this->texture(0)->config())) {
+            out->setUnknownOpaqueFourComponents();
+            out->setUsingLCDCoverage();
+        } else {
+            out->setUnknownFourComponents();
+            out->setUsingLCDCoverage();
+        }
+    } else {
+        out->setKnownSingleComponent(0xff);
+    }
+}
+
 void GrBitmapTextGeoProc::getGLProcessorKey(const GrBatchTracker& bt,
                                             const GrGLCaps& caps,
                                             GrProcessorKeyBuilder* b) const {
     GrGLBitmapTextGeoProc::GenKey(*this, bt, caps, b);
 }
 
 GrGLPrimitiveProcessor*
 GrBitmapTextGeoProc::createGLInstance(const GrBatchTracker& bt,
                                       const GrGLCaps& caps) const {
     return SkNEW_ARGS(GrGLBitmapTextGeoProc, (*this, bt));
 }
 
 void GrBitmapTextGeoProc::initBatchTracker(GrBatchTracker* bt, const GrPipelineInfo& init) const {
     BitmapTextBatchTracker* local = bt->cast<BitmapTextBatchTracker>();
     local->fInputColorType = GetColorInputType(&local->fColor, this->color(), init,
                                                SkToBool(fInColor));
     local->fUsesLocalCoords = init.fUsesLocalCoords;
 }
 
+bool GrBitmapTextGeoProc::onCanMakeEqual(const GrBatchTracker& m,
+                                         const GrGeometryProcessor& that,
+                                         const GrBatchTracker& t) const {
+    const BitmapTextBatchTracker& mine = m.cast<BitmapTextBatchTracker>();
+    const BitmapTextBatchTracker& theirs = t.cast<BitmapTextBatchTracker>();
+    return CanCombineLocalMatrices(*this, mine.fUsesLocalCoords,
+                                   that, theirs.fUsesLocalCoords) &&
+           CanCombineOutput(mine.fInputColorType, mine.fColor,
+                            theirs.fInputColorType, theirs.fColor);
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 
 GR_DEFINE_GEOMETRY_PROCESSOR_TEST(GrBitmapTextGeoProc);
 
 GrGeometryProcessor* GrBitmapTextGeoProc::TestCreate(SkRandom* random,
                                                      GrContext*,
                                                      const GrDrawTargetCaps&,
                                                      GrTexture* textures[]) {
     int texIdx = random->nextBool() ? GrProcessorUnitTest::kSkiaPMTextureIdx :
                                       GrProcessorUnitTest::kAlphaTextureIdx;
@@ skipping 18 matching lines @@
             break;
         case 1:
             format = kA565_GrMaskFormat;
             break;
         case 2:
             format = kARGB_GrMaskFormat;
             break;
     }
 
     return GrBitmapTextGeoProc::Create(GrRandomColor(random), textures[texIdx], params,
-                                       format, GrProcessorUnitTest::TestMatrix(random));
+                                       format, random->nextBool(),
+                                       GrProcessorUnitTest::TestMatrix(random));
 }